Rohde & Schwarz ESW Series - IF Analysis; IF Signal Tracking

Common Measurement Settings
R&S
®
ESW
181User Manual 1177.6298.02 ─ 08
IF Analysis
Defines the span and resolution bandwidth for IF analysis.
The span defines the spectrum that is analyzed around the receiver frequency. When
you change the span, the receiver frequency remains the same.
Tip: In the "IF Span" softkey menu, you can quickly set the full IF span and the last IF
span with the corresponding softkeys. The last span is the span that was selected
prior to the current span. You can access the "IF Span" menu via the [SPAN] key.
The resolution bandwidth (RBW) selects the width of the resolution filter that is used
for IF spectrum analysis. Note that the available resolution bandwidths depend on the
currently selected span.
In addition, you can couple the IF span to the Measurement Bandwidth (used for the
bargraph).
When "IF Span Coupled" has been turned on, the IF span is a function of the measure-
ment bandwidth.
Remote command:
Span: [SENSe:]FREQuency:SPAN on page 506
RBW: [SENSe:]BANDwidth:IF on page 511
IF span coupled: [SENSe:]BANDwidth:SCPL on page 511
IF Signal Tracking
Defines the characteristics for signal tracking.
When you turn on signal tracking, the R&S ESW tracks the signal and updates the
receiver frequency accordingly. The signal is assumed to be at highest level that has
been found within the tracking bandwidth. The tracking bandwidth defines a search
are around the receiver frequency.
You can also define a tracking threshold. If the signal level does not pass the thresh-
old, the center frequency is not changed.
If you use more than one trace, you can select the trace signal tracking is applied to.
Signal tracking is available for IF spectrum analysis and for spans > 0.
More information.
Remote command:
State: CALCulate<n>:MARKer<m>:FUNCtion:STRack[:STATe] on page 503
Bandwidth: CALCulate<n>:MARKer<m>:FUNCtion:STRack:BANDwidth
on page 504
Threshold: CALCulate<n>:MARKer<m>:FUNCtion:STRack:THReshold
on page 504
Trace: CALCulate<n>:MARKer<m>:FUNCtion:STRack:TRACe on page 504
Frequency and Span Configuration